Looks to me like an hps coversion bulb. Not very bright or safe lookin but the coversions retain the mh shape but have and hps "filament?"
Tell me more about ur setup cause no ofeense it looks like its hott and poorly lit as well as a structure fire waiting to happen

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Current2tentgrow http://www.rollitup.org/grow-journal...ml#post3449848 i put a little jim beam in my res and next thing you know there is a male plant beating on a female and 2 clones were fucking